Fan for vacuum cleaners



Aug. 4, 1925.

' Fiied Nov. 25, 1921 1,548,082 w. J. WISE ET AL `FAN FOR VACUUMCLEANERS Aug. 4, 1925. -1,548,082

w. J.- wlsE ET Al.

FAN FOR VACUUM CLEANERS Filed Nov. y23, 1921 3 sheets-sheet 2 Aug; 4,1925.

w. J. wlsE ET AL FAN FOR VACUUM CLEANERS A Filed NOV. 23, 1921 TMI/MJAdamo Clllwn'l WILLIAM I. WISE ANI) VUnited States,

Patented Aug. 4, 1925.

'UNITED' STATES PATENT OFFICE.

THOMAS o. ADAMS, OP' NEW PHILADELPHIA, OHIO, ASSIGNORS TO THEWISE-MCCLUNG MANUFACTURING COMPANY, OF NEW PHILADELPHIA,

.,VOHIO, A CORPORATION or OHIO.

FAN FQR VACUUM Application led November 23, 1921.

To all whom t may concern.'

Be it known that we, WILLIAM J. WISE andy THOMAS O. ADAMS, citizens ofthe both residing at New Philadelphia, in the county of Tuscarawas VandState of Ohio, have invented a new and usef ful Fan for Vacuum Cleaners,ot' which the `following is a specification.

This invention relates to vacuum clean- 'ersvand more particularly tothe construc- 'tion and assembly of the fan upon the motor shaft. fcleaner, the fan is located within a fan In the usual portable vacuumchamber having an inlet ope-ning annularly ahgned. with the axis of thefan, the air being sucked into the Jfan chamber against the centralportion of the fan and exhausted therefrom to side of the periphery ofthe fan, and the objects ot the invention are to provide a fan soconstructed that the air may be exhausted from the fan is drawn intosaid chamber, in order to prevent any obstruction of the fan chamber;other objects being 'to provide means for conveniently assembling the-fan upon the motor Shaft.

The above and other objects may at attained -byforming the body of thefan of convex or shallow conical shape, thus slightly restricting thecentral portion of the fan chamber adjacent to the point where the airis admitted thereto, allowing the air to be exhausted from the fanchamber` more lIgapidly than it was drawn into said cham- The motorshaft may be shouldered and threaded upon its extremity, a flanged,shouldered -an hub being located thereon and carrying the fan which isheld fixedly upon the motor shaft by means ot a washer and :iut placedtion of the shaft.

The invention thus set forth in general terms is illustrated in theaccompanying drawings, in which-4 y Figure 1 is a plan view partly insection of a horizontal typeofa portableyacuum cleaner provided withinvention;

Fig. 2, a section on the line lI-II, Fig. 1;

Fig. 3, a perspective view of the end portion of the motor and shaft;

i 1113.111181 CllStOl'IlaI the usual dust collector bag f through anoutlet opening disposed at one 1 chamber more rapidly than it P over thethreaded end por` a tan embodying the CLEANER-S.

Serial N'o. 517,399.

Fig.

Fig.

Fig. and

Fig. 7, a perspective view of the nut-which retains the fan upon themotor shaft.

Similar numerals of reference indicate corresponding parts throughoutthe drawings.

The motor 1, motor casing 2,' an casing 3, nozzle 4, wheels 5 and dustcollector bag 6, may be of any usual construction, the air being drawninto the fan chamber- 7 from the nozzle through the'inlet opening 8, andexhausted therefrom into the dust collector bag through the outletopening 9 in thein'vacuum cleaners.

Although the Invention is shown in the )resent case applied to a vacuumcleaner of the horizontal motor type, it will be understood that theinvention is equally applicable without change to any other form ofortable vacuum cleaner.

The motor shaft 10 is journaled in a bearing 11 carried in the baseplate 12 of the motor frame, a felt packing 13 being preferably providedaround the motor shaft within the cylindric Opening 14 which containsthe bearing for the purpose of preventing dust from working into thelower bearing and also of preventing lubricating Oil from being carrieddownwardly along the shaft into the fan chamber.

The end portion of the motor shaft is reduced and threaded as at 15,providing an annular shoulder 1G, the fan hub '17 being placed. over theend portion of the yshaft and provided with the internal shoulder 18which engages the shoulder 16 of the shaft.

The. fan hub 17 is provided midway of its length with the annular flange19, and the annular body portion 20 of the fan, which is slightly convexor tapered, as best shown in Fig. 1, is provided with the centralaperture 21 which fits snugly over the hub, the body portion of the fanbeing of suitable thickness to extend to the outer end of lthe hub.

The usual curved blades 22 are provided upon the fan, being preferablyof greater width at their outer end portions than at the center of thefan, in order to quickly ber through the inlet opening 8.

A washer 23 is placed over the end of the motor shaft and against thebody portion 2O of the fan, a nut 24 being placed upon the threadedextremity of the shaft and tightene to hold the washer in frictionalengagement with the fan, thus clamping the fan between the flange 19 vofthe hub and the washer 23, and clamping the fan hub tightly against theshoulder 16 of the shaft, the fan thus being xed upon the shaft.

As the body portion 20 of the fan is convexed or tapered toward the thusbe evident that the central portion of the fan chamber is slightlyrestricted with reference to the peripheral portion thereof, thuspermitting the air to the fan chamber more rapidly than it is drawn intosaid chamber, preventing any obstruction of the fan chamber andpermitting the air to be passed freely therethrough from the nozzle tothe dust collector bag.

It will also be evident that 'the fan may be easily and readilyassembled upon the motor shaft or removed therefrom, the loosening ofthe nut 24 allowing the entire fan assembly to be slipped over the endof the motor shaft, while the fan may be held rigidly upon the motorshaft by tightening said nut.

We claim 1. In a vacuum cleaner including a fan chamber provided with anannular depression and having a central inlet opening and a center, itwill be expelled from peripheral outlet opening, a rotary fan within thefan chamber comprising a concavoconvex disk having blades thereon', thedisk being inclined away from the inlet opening from center toperiphery, the periphery of the disk being located within said annulardepression.

2. In a vacuum cleaner including a fan' cham-ber provided with anannular depression and having a central inlet opening and a peripheraloutlet opening, a rotary fan mounted within the fan chamber andcomprising a saucer-shaped disk provided with transversely disposedblades the periphery of the disk being located within said annulardepression.

3. In a vacuum cleaner including a fan chamber, a motor and a motorshaft extend- 1n edgshank upon the motor shaft, an internally shoulderedfan hub mounted upon said shank, a peripheral flange upon the hub, a

fan mounted upon the outer end portion of the hub and engaging saidflange, a Washer upon said shank engaging the fan, anda nut vupon theshank engaging said washer whereby the fan is clamped between saidwasher and hub flange.

In testimony that we claim the above, We have hereunto subscribed ournames.

WILLIAM J. WISE. THOMAS O. ADAMS.

mto the fan chamber, a reduced, thread-`

